How do you add a note to explain a line of code in JavaScript?

How can single-line comments help during debugging?

A). By highlighting errors

B). By temporarily disabling code

C). By changing code execution

D). By improving performance

How do single-line comments improve code readability?

A). By adding extra executable code

B). By explaining complex logic

C). By increasing code length

D). By making code run faster

What happens if you place a single-line comment within a string in JavaScript?

A). It will be executed as code

B). It will be treated as a comment

C). It will be treated as part of the string

D). It will cause a syntax error

Which of the following is a valid single-line comment in JavaScript?

A). // This is a comment

B). /* This is a comment */

C).

D). # This is a comment

What is the purpose of single-line comments in code?

A). To add executable code

B). To increase execution speed

C). To explain and document the code

D). To replace code

Why should comments be clear and concise?

A). To avoid confusion

B). To increase code execution speed

C). To ensure they are ignored by the interpreter

D). To make them look professional

Why should comments be kept up-to-date with the code?

A). To ensure they do not cause syntax errors

B). To prevent the code from running

C). To make the code easier to understand for others

D). To increase code execution speed

What is the syntax for writing an inline comment in JavaScript?

A). # This is an inline comment

B). // This is an inline comment

C). /* This is an inline comment */

D).

How can you temporarily disable a piece of code without deleting it?

A). By commenting it out using //

B). By placing it in a string

C). By removing it from the file

D). By placing it in a function

Which of the following single-line comments would be used to explain a variable declaration?

A). // Variable to store user age

B). /* Variable to store user age */

C).

D). # Variable to store user age